1 / 8

Water, the Universal Solvent

Water, the Universal Solvent. Make a prediction…. What will happen when you pour hot, liquid wax into room temperature water? Write and draw your prediction. Water + Powder =. What happens when you pour lemonade powder into a pitcher of water? You make lemonade, a solution.

briancole
Download Presentation

Water, the Universal Solvent

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Water, the Universal Solvent

  2. Make a prediction… What will happen when you pour hot, liquid wax into room temperature water? Write and draw your prediction.

  3. Water + Powder = What happens when you pour lemonade powder into a pitcher of water? You make lemonade, a solution. Solution – a mixture that forms when one substance dissolves another. Solvent – the substance that does the dissolving (the water)

  4. Universal Solvent One reason that water is able to dissolve many substances is that it is polar. The charged ends of the water molecule attract the molecules of other polar substances.

  5. Comparing Solvents With your group members, complete the Comparing Solvents activity on page 26. • TIP: Keep your spoon in the correct cup. • TIP: Only use toothpick to stir ONE TIME and then throw away. • Dispose of liquids in cups A, B, C in the SINK. • Dispose of D, E, F in the garbage. Throw the entire cup in garbage. No oil in the sink!

  6. Conclusions • In which solvent did each substancedissolve better? Each of the three substances dissolves better in WATER. 2. Propose an explanation for your results. Think about the differences between polar and nonpolar molecules. The substances must have had charged particles that were attracted to water’s polar molecules, but not to the nonpolar oil molecules.

  7. H2O Yeah! • Water dissolves so many substances that it is often called the “universal solvent”. • Other substances that dissolve in water:

  8. Nonpolar Molecules The molecules of oil are nonpolar molecules – they have no charged regions. Some substances do not dissolve in water such as oils and wax.

More Related